George J. Linde, NRLabstracts Obituary

Women in Science and Engineering (WISE)
In memoriam
NRL-WISE hosts physicist Dr. Katharine Gebbie
~ George J. Linde ~
1941 - 2012
(Continued from page 4.)
recognize both her scientific achievements and her
civic contributions. An elementary school in the
city is also named after her, which is particularly
appropriate, as Dr. Gebbie recalls that Aunt
Katharine always entranced her and her playmates
with the suitcase of experiments she used to bring
to the house — she would show the children how
to make different colors by dipping glass rods into
films of oil floating on water.
Dr. Gebbie was not only inspired by her
namesake aunt, but she also followed in her
footsteps — as did Dr. Gebbie’s mother and
another aunt — by attending Bryn Mawr College.
(Dr. Gebbie wryly related that on her 15th birthday,
her grandmother first congratulated her for turning
15, and then pointed out that her Aunt Katharine
was already entering Bryn Mawr at age 15….)
Dr. Gebbie majored in physics, as her aunt had, and
was one of only three students with that major in the
class of 1957. She went on to study astronomy and
earned her Ph.D. in physics from University College
London. In 1991, after a long career at the Joint
Institute for Laboratory Astrophysics in Boulder,
Colorado, she became chief of NIST’s new Physics
Laboratory, now called the Physical Measurement
Laboratory. In her role at NIST, Dr. Gebbie has been
called “fearless and committed to excellence.” She
is also called “high-flying” — in part, because she
is a pilot; she has flown her mother’s small plane all
around North America.
Dr. Gebbie acknowledged that her Aunt
Katharine was a role model to her, but that she
did not realize it until she was older. It never
occurred to her to ask her aunt what it was like
to be a prominent woman scientist — after all,
didn’t everyone have aunts who were distinguished
physicists? To Dr. Gebbie, she was her fun and
entertaining Aunt Katharine who always had a
suitcase, and a mind, full of wonders to share.
NRL’s WISE chapter hosts lectures, roundtable meetings, and other events throughout the
year, and also co-hosts with Sigma Xi a Postdoc
Poster Session. Events are open to the entire NRL
community. For more information, contact WISE
president Dr. Arati Dasgupta at (202) 404-4389.
Announcements
Laboratory for Computational Physics and Fluid Dynamics
seminar
Dr. K. Kailasanath, Code 6040, will be the
guest speaker at the Laboratory for Computational
Physics and Fluid Dynamics seminar on Friday,
December 7, at 1 p.m., in Building 97, Room 132.
His talk is entitled “Detonation Engine Research at
NRL.”
ABSTRACT — Engines based on the inherent
higher thermodynamic efficiency of the detonation
cycle have been desirable for many years. They
have the potential to revolutionize the engines
used in propulsion and power systems of the future
by significantly reducing the fuel consumption.
NRL has been in the forefront on identifying and
developing the science and technology base for
engines based on the detonation cycle. This talk
will provide an overview of this exciting future
technology. The most developed detonation engine
concept is the intermittent or Pulsed-DetonationEngine, or PDE. While the PDE is attractive in
many ways, the concept also has many issues
that are continuing to be resolved. An alternative
concept that has received less attention is the
Rotating-Detonation-Engine, or RDE. An RDE is a
type of continuous detonation wave engine where
a detonation is initiated once and then remains
intact while the engine is running. Similar to the
PDE, the RDE has the advantage of being able
to operate under a wide range of conditions and
Center for Biomolecular Science and
Engineering colloquium
Dr. Terry C. Hazen, UT/ORNL Governor’s
Chair Professor, will be the guest speaker at the
Center for Biomolecular Science and Engineering
colloquium on Thursday, December 13, at 10 a.m.,
in Building 30, Room 228 (main conference room). His talk is entitled “The Deepwater Horizon Oil
Spill: A Systems Biology Approach to an Ecological
Disaster.”
ABSTRACT — The explosion on April 20,
2010 at Deepwater Horizon drilling rig in the
Gulf of Mexico resulted in oil and gas rising to
the surface and the oil coming ashore in many
parts of the Gulf, and in the dispersment of an oil
plume 4,000 feet below the surface of the water.
Despite spanning more than 600 feet in the water
column and extending more than 10 miles from the
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November 26, 2012
wellhead, the dispersed oil plume was gone within
weeks after the wellhead was capped – degraded
and diluted to undetectable levels. Furthermore, this
degradation took place without significant oxygen
depletion. Ecogenomics enabled the discovery of
new and unclassified species of oil-eating bacteria
that apparently live in the deep Gulf where oil
seeps are common. The results provide information
about the key players and processes involved in
degradation of oil, with and without COREXIT,
in different impacted environments in the Gulf of
Mexico.
For more information, contact Dr. Gary J. Vora
at (202) 767-0394 or gary.vora@nrl.navy.mil.
Mach numbers. We have conducted and published
extensive research on the Pulse-Detonation Engine
Concept. Now, we are conducting numerical simulations on an idealized RDE concept in order to
better understand the flow field and performance
potential of these engines. I will present the highlights of our fundamental numerical simulation
based studies of both detonation-engine concepts
and put it in the context of the ongoing world-wide
effort in advancing this technology.
For further information, contact Ms. Lisa
Williams at (202) 404-1057 or lisa.williams@nrl.
navy.mil.
Combined Federal
Campaign (CFC)
George J. Linde, a long-time member of the
Radar Division, died January 17, after a long illness,
which he battled courageously. His family endured
the Nazi occupation and then fled to Germany
when the Soviet Army invaded in 1944. During the
difficult years after WWII, the family was sent to
a Displaced Persons camp in Augsburg, Germany,
where George attended elementary school. In
1950, the camps were closed and the residents
were resettled into communities all over the world.
The Linde family found sponsorship to settle in
Hutchinson, Minn.
After showing an early interest in engineering,
George attended the Institute of Technology at the
University of Minnesota where he received a BSEE
with Distinction in 1965. He worked for one year
at the IBM Corporation at Rochester, Minn., before
joining the Radar Division at NRL in 1966.
While at NRL, he earned a MSEE from the
University of Maryland in 1971.
George made contributions to many significant
radar projects over his 41 years with the Radar
Division. Early on he became the principal
investigator for the experimental Reflect-Array
Radar used to validate new concepts which
ultimately led to the specifications for the Aegis
SPY-1 radar. He was also a member of the team that
developed and demonstrated a new Low Probability
of Intercept radar system.
He helped design and demonstrate radar
concepts for the secure landing of aircraft aboard
Navy carriers and was the principal investigator
for a project to develop and demonstrate ECCM
techniques for Navy radars. He was principal
investigator for the development and demonstration
of a Surface Search Image-While-Scan radar for
continuous surface surveillance and ISAR imaging
of targets of interest.
A large part of George’s career at NRL in
the 1980s was devoted to his assignment as the
principal investigator for the SENRAD radar being
installed at NRL’s Chesapeake Bay Detachment
(CBD). SENRAD was a revolutionary new radar
concept for future air-surveillance radars, developed
at NRL with industry support. This radar featured
a very wide bandwidth of 850-1400MHz, which
made the radar resistant to enemy jamming, allowed
the use of wideband waveforms for target imaging
and classification, reduced multipath effects over
water, and made it possible to implement a novel
type of height finding. After the work on SENRAD
became declassified, a detailed paper on its design
and performance characteristics was published in
2001 in the IEEE Transactions on Aerospace and
Electronic Systems in a paper co-authored with
Dr. Merrill Skolnik and Keith Meads.
In 1995 George became the systems engineer
and principal designer for the WARLOC radar, the
world’s highest power 94 GHz radar, later to be
sited at CBD. The Gyro-Klystron tube for the radar,
which provides more than 80kW of peak power
and 10kW of average power, was developed in a
joint program with the NRL Electronic Science and
Technology Division. His contributions included
the overall radar design, the system integration into
two trailers, and years of research in many areas
then utilize this radar to understand what it can do,
and then to convey this knowledge to others.” Over the years George received four Alan
Berman Research Publication Awards, the NRL
Award of Merit for Group Achievement for the
High Power W-band Gyro-Klystron Amplifier
and WARLOC Radar Development, and the
NRL Technology Transfer Award. He authored
or co-authored 32 published papers and 21 NRL
reports.
George J. Linde.
of millimeter-wave radar phenomenology. This
research included propagation effects, sea clutter
reflectivity, inverse synthetic aperture imaging,
and the discovery of a new phenomenon, which he
named “airspikes,” thought to be caused by intense
pockets of refractive index fluctuation. His work on
WARLOC resulted in the Radar Division of NRL
acquiring a world-class capability in the technology
and phenomenology of millimeter radar.
George retired from NRL in 2007 but continued
his association with the Radar Division working part
time, initially as a re-employed annuitant and later
as a contractor.
At his retirement luncheon, a letter was read
from Dr. Merrill Skolnik, former Superintendant of
the NRL Radar Division. The following quotes from
this letter speak for themselves:
“There are many different kinds of radar
engineers – from those who philosophize about
radar to those who build it, operate it or maintain
it (usually all different people) and all those in
between. But I consider you to be the classical kind
of real radar engineer who creates a new type of
system that never existed before.” “…You are truly what a radar engineer should
be: one who can start with just an idea and create
something important that didn’t previously exist,
In addition to his
work in the field of
radar George devoted
much of his spare
time to some unique
and interesting
hobbies. He was a
master woodworker
and built many
pieces of furniture,
as well as elaborate
computer-designed
bowls, using wood
from a cherry tree in
his yard that he
cut and seasoned.
He had an avid interest in astrophotography and
spent many night hours, usually in the cold winter
months, photographing the night sky from an
observatory he built on his property. He had a
particular interest in the photography of nebulas
and galaxies where exposure times of hours are
often required. These photographs grace the walls
of his home and were used on Christmas cards sent
to friends and relatives. He was an avid runner all
his life and traveled to witness a number of world
class track events including the 1972 Olympics.
George also had been President of Our Savior’s
Lutheran Church at Bryans Road, MD, where he
was intimately involved in the day-to-day affairs.
George and Beverly, his wife of 46 years,
greatly enjoyed traveling in the United States,
as well as to Canada and Europe. His preferred
method of travel was always by car, and he insisted
that everyone must travel coast-to-coast by car
at least once in a lifetime. Together George and
Beverly did it a number of times. George and
Beverly also owned a large motor yacht named
Impatience, which they used to cruise along the
Potomac and the Chesapeake Bay on weekends and
vacations.
George will be sorely missed by his colleagues
at NRL, not only for his technical expertise, but for
his dry Minnesotan humor and unassuming manner.
His was a life well lived.
~ written by Robert Crisler, Mai Ngo,
and Vilhelm Gregers-Hansen
November 26, 2012
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